Glue-kettle



(No Model.)

B.L.R00T. GLUE KETTLE.

No. 591,933. Patented oct. 19, 1897.

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EDGAR L. ROOT, OF DEFIANOE, OHIO.

G LU E-KETTLE.

SPECIFICATION forming part of Letters Patent No. 591,933, dated October 19, 189'?.

Application filed June 14, 1897. Serial No. 640,773. (No model.)

To all whom it may concern:

Be it known that I, EDGAR L. ROOT, a citizen of the United States, residing at Defiance, in the county of Defiance and State of Ohio, have invented a new and useful Glue-Kettle, of which the following is a specification.

This invention relates to glue-kettles, its object being to provide an attachment to the kettle by means of which the glue may be quickly and easily applied to the object to be glued in a uniform manner and by the use of which all waste of the glue will be prevented.

The invention consists in applying to the kettle a spring-actuated rollervalve located below the level of the glue in the kettle, which valve will normally close the opening in which it works, but which may be depressed and rotated by the Aobject to be glued, and during its rotation will apply the glue evenly to the object as it is moved over the rollervalve.

The invention will be fully described hereinafter, and its novelfeatures particularly pointed out in the subjoined claims.

In the drawings, Figure 1 is a perspective view of a glue-kettle embodying my invention. Fig. 2 is a vertical longitudinal section. Fig. 3 is a side elevation of the valve and its support, detached. Fig. 4 is a vertical transverse section through the roller-valve and its support. v

Similar reference-numerals indicate similar parts in the several gures.

The kettle consists of the main body por-V tion 1 and the lateral extension 2, which communicates with the lower end of the main body portion.l As shown, the main body is cylindrical and provided with a removable lid or cover 3.- It is also provided with a jacket 4 around its upper portion, the bottom of which jacket is provided with a series of holes 5 to permit hot air or steam to pass into the space between the jacket and the kettle to prevent the glue from cooling in the upper portion of the kettle. I do not, however, limit myself to this particular construction of the kettle or the means for heating it, as these features of construction may be varied or changed in many ways. The only essential feature is that the kettle shall have aremovable cover for its upper end and a lateral eX- The lateral extension 2 is provided lwith an i opening 6, in which is a .threaded collar 7, preferably of brass, and this collar receives and supports an eXteriorly-threaded disk S, also preferably of brass. This disk is provided with an elongated opening 9 in its middle portion, in which the roller-valve 10 is adapted to work. It is also provided with two threaded holes 11 in line with the opening 9 and a short distance beyond the ends of the latter. These holes 11 receive the pins 12v, which have angular heads 13 for the reception of a wrench or suitable key by which they may be turned, and immediately below the angular heads the pins are threaded to work in the threaded holes 11, and their lower portions are plain and preferably round. A cross-bar 14 is loosely secured to the lower ends of the pins 12 and i s provided with an opening 15 midway its length.

16 indicates a U-shaped bar, and in the upper ends of its vertical arms 17 the spindle of the roller-valve 10 is j ournaled. The horizontal part 18 of the U-shaped bar carries a guide-pin 19, which enters the Opening 15 in the cross-bar 14. The vertical arms 17 have each a lug or ear 20, which is perforated for the passage of the respective pins 12, which t loosely inzthe perforations. Ooiled springs 21 are mounted on each vpin 12 between the cross-bar 14 and the lugs 20, and these springs normally tend to force the U-shaped bar 16 and the roller-valve' 10 upwardly, but this upward movement is limited by the engagement of the lugs 2O with the lower face of the disk. v

In order to preventy the escape of the glue around the valve, except when required, soft metal, such as solder, is poured into the recesses in the under side of the disk 8, on opposite sides of the valve, as indicated by 22, care being taken not to interfere with the vertical movement of the U-shaped bar 16 and the roller-valve. The roller-valve will project partly above the upper face of the disk S and soft metal will be poured around the valve on the upper face of the disk, as indicated by 23, in such manner that the soft IooV metal will adhere to the disk but not to the roller-valve, althoughA it will form a smooth seat for the valve and prevent the escape of glue until the valve is depressed'. Ribs 24 will also be formed by the soft met-al at each end of the valve and will serve as guides for the object to be glued as it is run over the roller-valve. It is of course to be understood that the roller-valves will be of such length and diameter and have suoli peripheral shape as maybe necessary for the object to be glued.

' than is possible with a hand-brush.

When long valves are used for veneeror other wide articles, it will be preferable to have an elevated glue-chamber at each end of the valve, but for jointing tongue-and-grooved boards or straight-edged boards of the ordinary thickness one elevated chamber will be sufficient.

In practice a sufficient quantity of glue will be kept in the kettle,so t-hatit will always bein contact with the under face of the disk 8, and the coiled sprin gs 2l will normally hold the roller-valve against its soft-metal seat and prevent the escape of glue around the valve. Vhen theboard or other object to be glued is pressed upon the projecting surface of the roller, the latter and the U-shaped bar 16 will be forced downwardly against the force of the springs 2l, and by moving the object over the roller the latter will rotate and apply glue to the object in an even and uniform manner, and as soon as the pressure is released the springs 2l will immediately return the roller-valve to its seat.

From the foregoing description it will be evident that there will be nowaste of glue and that the latter will be applied to the object much more expeditiously and uniformly By pouring metal around the roller-valve to forni its seat it is obvious that different-shaped rollers may be quickly substituted for each otherin the same bearing and have a properly-shaped seat provided for them. It is also evident that by operating the pins l2 from the outside, the tension of the springs 2l may be adj usted to regulate the extent of the vertical movement of the roller-valve, and thereby the quantity ofy glue to be applied to the board or other object. By using the lid or cover 3 for the kettle to keep the air out of the kettle, the glue will not scum at the top and will therefore be in better condition for use.

It will be understood that changes in the form, proportion, and the minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of this invention.

Having described my invention, I claiml. A fountain glue-kettle having a lateral extension at its lower end, combined with a spring-pressed roller-valve supported in said extension and closely fitting an opening therein and adapted to be rotated by a board or other object moving over it and toapply glue thereto, substantially as described.

2. A glue-kettle having a lateral extension at its lower end provided with an opening, and an internally-threaded collar secured in the said opening, combined with an externally-threaded disk supported in said collar and provided with an opening, a spring-actuated bearing supported by the disk, a rollervalve j ournaled in the bearing to work in said opening, and a valve-seat formed of soft metal secured tothe disk around the roller-valve, substantially as described.

3. A fountain glue-kettle having a lateral extension at its lower end provided with an opening, a spring-pressed roller-valve supported to iit and work in said opening, and a valve-seat formed of soft metal secured to the extension around the said opening to closely engage the roller-valve, substantially as described.

et. A glue-kettle having a lateral extension at its lower end provided with an opening, a springactuated rollervalve supported to work in said opening, a valve-seat formed of soft metal secured to the extension around the said opening to closely engage the rollervalve, and guiding-ribs at each end of the roller-valve also formed of soft metal secured to the extension, substantially as described.

5. A glue-kettle having a lateral extension at its lower end provided with an opening, and an internally-threaded collar supported in the opening, combined with an externallythreaded disk supported in said collar and provided with an opening in its middle p0rtion, pins extending through the disk and having a threaded engagement therewith, a. cross-bar loosely connected to the lower ends of the pins, a U-shaped bar having lugs or ears slidingly mounted on said pins, springs between said lugs and the cross-bar, arollervalve journaled in the U -shaped bar to work in said opening, and avalve-seat of soft metal secured to the disk around its opening to closely engage the valve, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

EDGAR L. ROOT.

lVitnesses:

HENRY B. HARRIS, FELLIs T. STRAW.

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